Improvement in lubricators



0.*H. PARSHALLl Lubrioator.

Patented Aug. 5, 1879.

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NJETERS. PHOTO-LIHOGRAPHEP. WASHINGTON. D C.

UNITED STATES PATENT OEEICE CHARLES H. PARSHALL, OF DETROIT, MICHIGAN.

IMPROVEMENT IN LUBRICATORS.

Specification forming part of Letters Patent No. 218,191, dated August5, 1879; application tiled April 17, 1879.

To all 'whom it may concern:

Be it known that I, CHARLES H. PARSHALL, of Detroit, in `the county ofWayne and State of Michigan, have invented certain new and usefulImprovements in Lubricators; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawing, which forms partof-this specitication.

My invention relates to an improvement in lubricators; and consists incertain details of construction and arrangement of parts, as will`hereinafter be described, and pointed out in the claims.

The drawing represents a vertical section of my improved lubricator.

A represents the oil-reservoir, preferably constructed of a metallicshell or cylinder, the upper end of which is formed with a ground joint,to which is secured the condensingchamber B, the latter having a groundjoint at a and a depending flange, b, the latter snugly fitting over theupper edge of the oilreservoir.

The upper end of the condenser B is provided with a screw-threadedstopper or plug, C, to admit of the inspection of the inner portion ofthe condenser.

The bottom or division plate, D, of condenser Bis provided with anupward1y-pro jectin g boss, consisting of the feed-water chamber D andstuffing-box E. The feed-water chamber D is provided on its outer sidewith aconically-formedpassage-way,c,within which engages the regulatingfeed-valve d, which latter is connected with a screw-threaded shankhaving handle e, and provided with a suitable stufngbox. p

The stuffing-box E has a central opening, e', through the upper portionthereof, through which is inserted the upper end of the steaminductionpipe F, the extreme upper end of which projects into the condenser B anydesired distance. Around the pipe E, within the stufngbox, is placed anysuitable packing material, j'. The packing-ring f is forced snuglyaround the pipe F, and a water and steam tight joint formed by means ofthe oilfeeding pipe G, the upper end of which is screw-threaded at g,and engages with corresponding screw-threads g cut in the inner surt'aceof the stuffing-box, whereby the upper end of the pipe G serves as agland for the stuiiing-box.

The lower end of the oil-reservoir is formed with an opening, H, havinga conical seat, h, within which is seated the conical end h of the nutI, the latter having a screw-threaded bore, which engages withscrew-threadsformed on the lower end of the pipe Gr.

It will thus be observed that the pipe G serves as a tubular tie-rod, tormly connect the oil-reservoir and condenser. The upper end of pipe G isfirst screwed into the stutfing-box, the -condenser is then seated uponthe upper end of the oil-reservoir, and the nut I then screwed ont-o thelower end of the pipe G serves to firmly secure the parts in position,the conical face ofthe nut allowing the parts to adjust themselves totheir proper position to constitute firm and water-tight joints.

The steam-induction pipe extends down and connects with thesteam-passage j in the stem J of the lubricator, thereby forming acontinuous steam-passage from the steam-pipe, with which the stem isconnected to the condenser of the lubricator.

To the bottom of the feedwater chamber in the condenser is connected apipe, K, which extends downwardly near to the bottom of theoil-reservoir, the lower end of said pipe K entering a pipe, L, thelower end of which is closed and rests loosely upon thebottom of theoil-reservoir. Pipe L is of any desired length, its purpose being toform a water-trap to prevent the oil from iiowing into the condenserfrom the oil-reservoir. The stem J is provided with a screw-threadedcoupling, j', which .engages with a screw-threaded collar, k, formed onthe lower end of the oil-reservoir.

K is an oil-regulatin g valve, which seats in a Valveseat, 7c', formedin the oil-passage l, extending transversely 'through the stern, andconnecting with an inverted Siphon-pipe, L', attached to the lower sideof the stem.

M is a glass cylinder or tube connected with the under side of the stem,and secured in place by an open-work or skeleton guard, m, made of metalor other material desired, the

upper end of which is screwed to the screw1 threaded boss m on the stem,while to its lower end is attached a chnmbered followernut, N, thelatter being provided with a stopcock, O, for the purpose of drawingotil the Contents of the glass tube when desired.

P is an oil-feeding conduit in the stein of the lubricator, one end ofwhich connects with the upper portion of the glass tubeoreylimler M. Aglass ilnlicating-tnbe, Q, is connected with the side ofthe lubricator,as follows, and serves to indicate the height of oil in the reservoir.To the lower end of the oil-reservoir is attached an elbow-pipecoupling, q, within the upright portion of which is seated the lower endot' the glass tube. and tirmly secured by the follower-nut q.

R is a stop-cock, located in the pipe q, for drawing off the contents ofthe oil-reservoir when necessary. A T-pipe coupling, S, is screwed intothe lower portion of the condenser, and connects with the upper portionof the oil-reservoir, a chamber, S', being formed in the under side ofthe lower division-plate of the condenser to insulate the chambers ofthe condenser and oil-reservoir, and yet allow of the attachment of thepipe S to the shell of the condenser.

In the lower limb, T, of the T-coupling S is received the upper end ofthe glass tube, which is tirmly secured in place by the follower-nut t.The upper limb, T2, of said coupling is made outwardly tial-ing or offunnel form, to facilitate the introduction of the oil.

U is a stopper, screw-threaded, to be attached to the portion T2 of thecoupling, said stopper being provided with an elongated chamber, u, inorder to insure a vertical column of oil, which will extend above thesurface of the condense-water in the condenser, and thus insure a steadyand certain tiow of oil.

The operation of my improved lubricator is as follows: Steam enters thestem of the lubricator, and tiows upwardly through the centralsteam-pipe, and discharges into the upper portion of the condenser. Theshell of the condenser serves to condense the steam, and the lowerportion of the condenser is thus kept filled with condense-water. Oil isadmitted to the oil-reservoir through the funnelshaped pipe above theglass indicating-tube, and flows through the passage-way r leading tothe oil-reservoir. By opening the valve governing the flow of water tothe fecdwater chamber in the condenser, water is allowed to iiow intothe pipe depending into thc oil-reservoir and lill the trap-pipesurrounding the same. Thus the lower end of the downwardlyprojectingpipe in the oil reservoir is always ei'ectually water-sealed at itslower open end, and oil thereby prevented from entering said pipe andiiowing into the condenser.

As the water tiows over the top of the trappipe it sinks to the bottomof the oilreservoir and displaces an equal quantity of oil, which lattertiows into the central oil-feeding pipe through the openingwin the upperend thereof. The displaced oil iows downwardly through the annular spacebetween the outer surfaces of the steam pipe and initier surface of theoil-feeding pipe, and is subjected to sntiicient degree of heat to causethe oil to readily tiow to the lubricator-stem. The dis placed oilcontinues its downward course through the oil-passage in the stem of thelubricator and through the inverted Siphon-pipe situated in thedepending glass cylinder. This cylinder is filled with eondensewaterresulting from its direct connection with the steampipe, whereby steamis allowed to tiow directly into said glass cylinder and condensetherein.

The oil issuing from the lower and shorter limb of the invertedsiphon-pipe is caused to tlow into the oil-conduit of the stem of thelubricator and from thence into the steam-supply, owing to the fact thatthe column of oil supplying the feed is of sufficient height to secure agreater pressure than is ai'orded by the comparatively short column offeed-water.

The column of oil extends from the bend in the lower portion of theinverted siphonpipe to the openings in the top of the oil-feeding pipein the oil-reservoir. In fact, the oilcolumn may extend upwardly withinthe bore of the stopper located in the funnel-shaped pipe through whichoil is admitted to the lubricator, whereby the column of oil extendsabove the surface of water in the condenser, owing to the fact that theelongated chamber in the stopper extends above the discharge-opening inthe condensing-chamber of the lubri- Gator.

The glass tube or cylinder through which the oil is fed from thelubricator allows the attendant to watch the rapidity of the feed as thedrops of oil ascend through the water, and the feed can be regulatedeither by the valve governing the flow of feed-water to theoil-reservoir or by the valve governing the ow of oil from theoil-reservoir to the glass reservoir.

It is evident that many slight changes in the construction andarrangement of parts may be resorted to without departing from thespirit of my invention, and hence I do not limit myself to the exactconstruction shown and described; but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a lubricator, the combination, with an oil-reservoir, of acondenser constructed with a division-plate provided with a stuiing-boxformed solid therewith, substantially as set forth.

2. In a lubricator, the combination, with an oil-reservoir and astemprovidedwith a steampassage, of a condenser constructed with adivision-plate having a stuffing-box formed integral therewith, andasteam-pipe connecting at its lower end with the steam-passage in thestem of the lubricator, while its upper end eX- tends through thestanding-box and projects upwardly into the condenser, substantially asset forth.

3. In a lubrioator, the combination, with an oil-reservoir andacondenser constructed with a stuffing-box formed solid therewith, of asteam -pipe extending through the oil-reservoir and stuffln g-box, andan oi1-feedin g pipe which is arranged to serve as a gland to pack thesteam-pipe, and also to secure the oil-reservoir to the condenser,substantially as set forth.

4. In a lubrieator, the combination, with an oil-reservoir andaeondenser provided with a stuffing-box, of a steam-pipe for conveyingsteam through the oil-reservoir and discharging it into the condenser,and an oil-feeding pipe surrounding the steam-pipe and serving to conveythe oil from the upper portion of the oil-reservoir to the oil-regulating valve in he stein of the lubrioator, substantially as set Orth.

5. The combination, with a water-pipe depending from the condenser intothe oil-reservoir of a lubrieator, of a pipe formed with a closed lowerend, which rests upon the bottoni of the oil-reservoir, and receiveswit-hin its upper end the lower end of said depending water-feed pipe,the two pipes being disconneeted, substantially as set forth.

6. In a lubrieator, the combination, with the oil-reservoir andcondenser", of a glass indi- Gator provided with a hollow stopper foradmitting oil above the surface of the water in the condenser7substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this8th day of April, 1879.

CHARLES H. PARSHALL.

Witnesses:

DONALD BREMNER, W. M. LILLIBRIDGE.

